Electric gripper system and control method thereof

An electric gripper system, being configured to control a gripper mechanism to grip a workpiece and comprising:

• a motor, being configured to drive the gripper mechanism;
• a sensor, being assembled onto the motor and generating a current position according to a position of the gripper mechanism;
• and
• a control processing unit, comprising a control segment, a transceiver segment, an accessible segment, and a driving segment;
• the control segment being connected to the transceiver segment, the accessible segment, the driving segment, and the sensor, the transceiver segment generating a relative-position command value, the accessible segment storing an absolute cumulative position;
• the control segment reading the relative-position command value, the absolute cumulative position, and the current position, the control segment generating a target position based on the relative-position command value and the absolute cumulative position, the control segment generating a driving datum based on the current position and the target position and on a rotation rate of the motor;
• the driving segment reading the driving datum so as to drive the motor to move the gripper mechanism.